The Mongols attack the Cheolju Fortress. Even though the fortress has barely 2.5k men, they are able to withstand the attack of the enemy for a little over ten days. Generals Yi Won Jeung and Yi Hui Jeok, lock their families, and those of the soldiers, in a storeroom and burn it down. One of the generals gives Kim Joon his last order: go back to the capital city and report all he has seen on the front lines. The remaining soldiers of the Cheolju fortress open the gates and attack the Mongols.

Sartai admits he has underestimated the Goryeo soldiers because the Hansijin fortress was defeated so easily. General Kim and Kim Joon plan and execute a 12 men suicide mission to lower the moral of the Mongol troops.

Kim Joon is ordered back to the city, even though the Gwiju fortress is still being attacked. The troop Sartai sends to attack the capital city, burns down all villages and kills all living creatures they find on their way as a warning should they decide to stand their ground and not surrender. They also burn down the Buddhist temple near the city.